Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (2): 305-310.doi: 10.3866/PKU.WHXB201312022

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Silicon Supported on Stable Si-O-C Skeleton in High-Performance Lithium-Ion Battery Anode Materials

WANG Jian-Tao, WANG Yao, HUANG Bin, YANG Juan-Yu, TAN Ao, LU Shi-Gang   

  1. R&D Center for Vehicle Battery and Energy Storage, General Research Institute for Nonferrous Metals, Beijing 100088, P. R. China
  • Received:2013-10-24 Revised:2013-12-02 Published:2014-01-23
  • Contact: LU Shi-Gang E-mail:slu@grinm.com
  • Supported by:

    The project was supported by the National High Technology Research and Development Program of China (863) (2011AA11A256, 2013AA050903, 2013AA050906).

Abstract:

A Si/SiOC/graphite composite structure with high efficiency and long-term cycling stability was synthesized using a cost- effective method. In this structure, a SiOC network with good chemical stability acts as a skeleton to support and segregate Si nanostructures. The graphite incorporated in the Si/SiOC composite is used as a conductive material to enhance the electrical conductivity. Such Si/SiOC/graphite composite anodes show excellent cycling stability, with a specific capacity of ~637.3 mAh·g-1 and ~86% capacity retention over 100 cycles at a rate of 0.3C. The design of this new structure has the potential to provide a basis for the development of other functional composite materials.

Key words: Si/SiOC/graphite, Composite material, Lithium-ion battery, Anode, Long-term cycling

MSC2000: 

  • O646